Last updated: June 2, 2025
In 12 de Diciembre (Sombreretillo), Mexico, awareness of the UV Index is crucial for protecting your skin and overall health. Understanding UV levels helps you take necessary precautions against harmful sun exposure, which can lead to painful sunburn and long-term skin damage. Nestled in a BSh climate zone, Sombreretillo experiences high UV risks, especially between 11:00 AM and 3:00 PM, when the index peaks at a striking 13. Stay informed and safeguard your skin by checking the UV Index regularly—your health depends on it!
The UV Index for the day showcases a dynamic climb as the sun rises. Starting at a gentle 0 at 07:00, it gradually ascends to 1 by 08:00 and reaches a moderate 2 at 09:00. As the clock ticks towards noon, the Index peaks at an impressive 11 by 12:00, indicating a very high risk of harm from unprotected sun exposure. From 13:00 to 14:00, it holds steady at a peak of 13, before gradually tapering off to 10 at 16:00. As the day cools down, the UV Index drops to 3 by 18:00 and settles at a safe 1 by 19:00, emphasizing the importance of sun safety during the peak hours of mid-afternoon.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 13 | extreme | 10 min |
| 15:00 | 12 | extreme | 10 min |
| 16:00 | 10 | very high | 15 min |
| 17:00 | 6 | high | 25 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV levels exhibit significant fluctuations, peaking between March and October when the UV Index often reaches extreme levels of 12-14. The highest risk months for UV exposure are April, May, July, and August, with burn times as short as 10 minutes in these months. Visitors and residents are advised to take precautionary measures during these periods, including applying broad-spectrum sunscreen, wearing protective clothing, and seeking shade during peak hours to reduce the risk of skin damage. In contrast, December and January exhibit lower UV levels, although January still maintains a very high category with a burn time of 15 minutes, so it's important to remain vigilant even in the cooler months.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 12 de Diciembre (Sombreretillo) | 8 | 10 | 12 | 14 | 14 | 13 | 14 | 13 | 13 | 11 | 9 | 7 |
| Guadalajara UVI | 9 | 11 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 9 | 8 |
| Iztapalapa UVI | 10 | 12 | 14 | 15 | 14 | 14 | 14 | 14 | 14 | 12 | 10 | 8 |
| Ecatepec de Morelos UVI | 10 | 12 | 14 | 15 | 15 | 14 | 14 | 13 | 14 | 12 | 10 | 8 |
| Mexico City UVI | 10 | 12 | 14 | 15 | 15 | 14 | 14 | 13 | 14 | 12 | 10 | 8 |
| Puebla UVI | 10 | 12 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 10 | 9 |